/* -*-c++-*- */
/* osgGIS - GIS Library for OpenSceneGraph
 * Copyright 2007-2008 Glenn Waldron and Pelican Ventures, Inc.
 * http://osggis.org
 *
 * osgGIS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

#ifndef _OSGGIS_RECALCULATE_EXTENT_FILTER_H_
#define _OSGGIS_RECALCULATE_EXTENT_FILTER_H_ 1

#include <osgGIS/Common>
#include <osgGIS/CollectionFilter>

namespace osgGIS
{
    /**
     * Collects all incoming features, calculates the extent of the collection,
     * sets this extent of the FilterEnv's new working extent, and outputs the
     * features.
     *
     * This filter performs a kind of "shink-to-fit" function on the current
     * working extent (as conveyed by the FilterEnv).
     */
    class OSGGIS_EXPORT RecalculateExtentFilter : public CollectionFilter
    {
        OSGGIS_META_FILTER( RecalculateExtentFilter );  

    public:
        /**
         * Constructs a new extent recalculation filter.
         */
        RecalculateExtentFilter();

        /**
         * Copy constructor
         */
        RecalculateExtentFilter( const RecalculateExtentFilter& rhs );
    
    public:

        virtual void setProperty( const Property& prop );
        virtual Properties getProperties() const;

    public:
        
        virtual void preMeter( FeatureList& features, FilterEnv* );

        virtual ~RecalculateExtentFilter();
    };
}


#endif // _OSGGIS_RECALCULATE_EXTENT_FILTER_H_

